Auxiliary power device.



PATENTE) DEG. 24, 1907.

J. G. MURPHY, AUXLIARY POWER DEVICE.

APPLICATION FILED MAY 17,1907.

W/TNESSES JOHN e. MURPHY, 4OF NEW YORK, N. Y.

AUXILXARY ,POWER DEVICE.

Specification of Letters Patent.

resented nenes., me?

pplicstiou filed May 17. 1907. Serial No. 374.147.

`To all whom it may concern: l

Be it known that l, JOHN G. MURPHY, a

citizen of the United States, and residing at No. 402 West One Hundredand Twentyfifth street, in the borough of Manhattan, New York city,State of N ew York, lieve invented a certain-new end useful Improvementin Auxiliary Power Devices, of which the following is a s ecificetion.

My invention re etes to improvements in auxiliary power devices, and theobject of my invention is to provide n simple end ofiective meanswhereby e. truck or similar structure may be hauled up an inclined sur-'face such as askid or platform.

ln the accompanying drawings which illustrete my invention Figure 1 is olongitudinal sectional view of my device with e hand truck thereon. Fig.2 is s rear view o? a truck and a lateral cross section ci the skid.Fie. 3 is a, View oi' a linli of the clisin.

imiisr letters refer to ysimiier parts throughout the several views. lThrough the'longitndinel center of o skid or platform c, l provide aslot l), having therein en endless chain c mounted upon s rocket rollersd and e at each end of the s rid, either or both of the sprocket rollersd and e being revolved by power e plied in a suitable manner.Supportirngy rol ersr c2 c3 c* journaled in thesheathing t* t? of theslot-- i (his t are rovided et suitable inter-vele. eech othelongitudinal sides of the skid a' are provided angle pieces o1 o2 toforina track for the wlieelsj: and g respectively, of the truck it.These trecksdnsy however be formed in any desired manner. The truclr la,is supported upon the orde h* of the wheels j and g. A stud t is securedto the under side of the truck h, preferably es l have shown, on theaxle h' by ineens of ebelt t".

the truck h, a suHieient distance to engage the chain c, when the wheelsof the truck are in position on the treolr el a2'. I `provide guards haand h4 on the side of the truck h over the wheelsf and g. l

l have shown in my drawings the usuel form of hand truck h provided withtwo wheels, but my device is e ually applicable to e. truck of any form.A'lili secured tothe. under side of the truck hin such manner that itwill turn backward when accidentally enge ing en obstruction, but willnot move fori/ver beyond the perpendieuler.

This stud. .i projects downwerdly from the under side oi' e stud i maybeIt will thus be seen that the truckh may be operated in the usual mannerin the transportation of loads independently `of my Vdevicewhich isintended as an auxiliary means for hauling tha-truck .up al1-inclinedsurface. 66 y When the truck "liis brought tothe lower end of the skid,or'other inclined surface, the' stud i depending from the under side ofthe truck h, will engage o,b e of the links of thefl; endless chainenctuttelf-)l by power op lied'to one or both of the sprocket rollers(fand e, and will thus be drawn up the inclined Surface. When the truckreaches the top of theascent, the stud 'i will be released from thechain c, and the truck is usedas before in the transportation of itsload:

I hevefshown in my drawings im endless chain but any equivalent may beused to advantage, suchv ss a screw or cable.

Having thus described my invention, what l claim is 1. In e. device ofthe' character described, the combination of e platform longitudinallyslotted, angle pieces secured to the side of the latform forming a trackbelow the pierre of t e platform surface, an endless chain nonnted uponsprocket rollers at each end of the platform, and lying below the uppersurface, sup ortingrollere intermediate of the* ends of the platform,and a truck having o; stud secured to its underside and lying within theslot to enge-ge the endless chain, when the wheels of the truck ereA onthe tracks, substantially as shown and described.

2. In e device of the charscter 4described the combinetion'of a platformlongitudinally slotted. angle pieces, secured to the side of described.

.in testimony Whereoil lieve signed neme to this specification inthepresence of two subscribing Witnesses, thisth day of i 'l l inni whenthe wheels of the truck r the platform, Vforming a' tinck below the'.-

April 1907. Y J'OHN G. MURPHY. Witnesses:

ANDREW Famos, Jr., Mins` R. Ives.

